Computational investigation of a large containership propulsion ...
Preliminary Design of Containership
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Transcript of Preliminary Design of Containership
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Preliminary Design of Containership
Graduation Project By
Ahmed Atef WageehRashed Ibrahim Rashed
Kholod Ahmed ZakiEngy Essam Abd El-Fattah
Supervised by/Prof.DR.Yousri WelayaDR.Tamer M. Hamed
2014-2015
Why containerization ?!
Increasing the efficiency of cargo handling,reducing shipping time by 84% and costs by 35%.
Today, approximately 90% of non-bulk cargo worldwide is transported by container.
TEU .no LOA (m) LPP (m) B (m) D (m) T (m) TEU in deck .no TEU in hold .no DWT (ton) Power (kw) V (kn)
354 99.97 91.55 15.85 8.85 5.65 230 124 4533 1860 15
703 121.9 111.9 20.1 9.2 6.8 511 192 7440 5400 16.1
724 127 115.7 20.5 11.3 6.26 470 254 5999 5400 16.5
750 134.65 125.6 21.5 9.3 7 525 225 9300 7200 17.5
916 138 127.25 22.6 11.8 8 615 301 9600 9450 18.8
966 139.1 129 22.6 11.8 8.8 654 312 9600 9600 17
960 133.7 120.7 22.7 11.3 7.6 654 306 9900 10400 16.9
982 133.7 121 22.7 11.3 7.6 676 306 9900 10400 17.1
1128 148.7 136.85 22.7 11.3 7.7 778 350 12100 10000 17
1467 165.6 153 27.2 12 8.5 993 474 15500 14800 20
1850 193.5 181 32.2 17 11 1146 704 29350 31990 22
1448 172 162.6 30 8.2 8.8 868 550 18300 16400 18
803 140.64 130 21.8 9.5 7.33 579 206 9340 8400 18
1212 149.8 140.6 25.2 13.7 7.5 830 382 10800 11440 19.5
1536 166 155 27.7 14.5 8.5 986 550 15000 14800 20.5
1684 166 155.9 27.7 8.7 8.5 1046 638 14800 14800 20.5
518 100.58 95.9 18.8 8.4 6.65 377 141 5500 4320 16
639 124.12 118 18.2 8.4 6.45 423 216 7030 4320 15
847 131.8 120.4 22.8 11.2 8.7 574 273 11000 8400 17.5
966 139.1 129 22.6 11.8 8.8 654 312 11500 9600 16.7
657 132.6 123.4 19.2 9.2 7.2 429 228 8037 6300 17.5
1114 147.85 141.37 23.25 11.5 7.3 780 334 13288 9730 19.6
1992 189.5 178 27.6 16.5 10 1270 722 22770 18080 21
Data Collecting
Collecting data of many ships to make regression models to approximately guess the parameters of the new design.
Regression Analysis
0 500 1000 1500 2000 2500 30000
50
100
150
200
250
TEU vs Lpp
TEU
Lpp
0 500 1000 1500 2000 2500 30000
1
2
3
4
5
6
7
8
TEU vs L/B
TUE
L/B
Regression Analysis
0 500 1000 1500 2000 2500 30000
0.5
1
1.5
2
2.5
3
3.5
4
TEU vs B/T
TEU
B/T
0 500 1000 1500 2000 2500 30000
20000
40000
60000
80000
100000
120000
TEU vs L*B*D
TUE
L*B*D
Regression Analysis
0 500 1000 1500 2000 2500 30000
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
TEU vs V/√ L
TEU
V/√ L
80 100 120 140 160 180 200 2200
50
100
150
200
250
Lpp vs LOA
Lpp
LOA
Main Dimensions Results
Length over all ( LOA ) 170.5 m
length between perpendicular ( LPP ) 155.4 m
breadth ( B ) 23.3 m
Draught ( T ) 9.2 m
Ship speed ( v ) 21 kn
Hatchless Container Ships• Deadweight can be increased by eliminating the weight of the heavy hatch covers.
• They are located high so their removal improves stability.
• Reducing time of port operations.
• Individual vertical stacks can be removed without disturbing the others.
• Securing of containers has become easier.
• The maintenance of hatch covers, coamings, gaskets, cleats etc., becomes unnecessary.
Power Calculation
At speed 21 knots it gives:
Resistance = 664.37 KNPower = 13956.879 KW
• EHP = R * V
• QPC = EHP/DHP
• BHP = DHP/( shaft * GB )